Sir, <br/><br/>At what time does she reach school. <br/><br/>Can I write it as <br/><br/>What time does she reach "to" school. <br/><br/>Actually I have "two" doubts here. <br/><br/>1. When should I use "at what" or just "what". <br/><br/>2.Should I use "reach to school" or only "reach school". <br/><br/>Would you please expalin for me? <br/><br/>Thanks.